Reggie McNeal is an excellent writer and his The Present Future and Missional Renaissance are well worth reading so am adding to the reading list!
"The church is not the destination; the kingdom is the destination. Jesus does not say, "Thy church come." He spends 40 days before His ascension teaching about the kingdom. Acts closes with the kingdom. Jesus uses "church" twice, but "kingdom" 90 times. When the kingdom breaks out, things change. People's lives get radically re-altered; their entire worlds get re-ordered."